US7085049B2 - Multi-mode stereoscopic image display method and apparatus - Google Patents
Multi-mode stereoscopic image display method and apparatus Download PDFInfo
- Publication number
- US7085049B2 US7085049B2 US10/055,890 US5589002A US7085049B2 US 7085049 B2 US7085049 B2 US 7085049B2 US 5589002 A US5589002 A US 5589002A US 7085049 B2 US7085049 B2 US 7085049B2
- Authority
- US
- United States
- Prior art keywords
- color
- mode
- variable
- light
- pixels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/324—Colour aspects
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/23—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using wavelength separation, e.g. using anaglyph techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
- H04N13/31—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes
- H04N13/359—Switching between monoscopic and stereoscopic modes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/398—Synchronisation thereof; Control thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
- H04N13/239—Image signal generators using stereoscopic image cameras using two 2D image sensors having a relative position equal to or related to the interocular distance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/257—Colour aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
- H04N13/334—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using spectral multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/361—Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
Definitions
- the present invention relates to a display device, and more particularly to a multi-mode stereoscopic image display method and apparatus wherein a plane picture and a stereoscopic picture can be displayed on a single display device.
- a display device is classified into a plane picture display device for displaying an image obtained by photographing an object using a single camera and a stereoscopic picture display device for combining two images obtained by photographing an object using two cameras positioned at different angles with respect to the same object to display an image.
- the plane picture display device permits an observer to view a plane picture without a cubic effect because an identical picture is simultaneously incident to a left-eye and a right-eye of an observer.
- the stereoscopic picture display device displays a picture being incident to the left-eye of an observer, hereinafter referred to as “left-eye picture” and a picture being incident to the right-eye of an observer, hereinafter referred to as “right-eye picture”, on a screen at the same time.
- the observer feels a cubic effect because he observes a picture displayed on the stereoscopic picture display device in a state in which the left-eye picture is combined with the right-eye picture.
- Such a stereoscopic picture display device includes a system that requires glasses for viewing and a system that does not require glasses for viewing.
- a stereoscopic picture display device requiring glasses includes first and second cameras 2 a and 2 b for photographing an object at a different angle, a display unit 14 for separating color signals of an image received from the first and second cameras 2 a and 2 b , and glasses 6 to be worn by an observer.
- the first camera 2 a photographs an object into red(r 1 ), green(g 1 ) and blue(b 1 ) color images, and sends a video signal corresponding to the red color r 1 to the display unit 14 .
- the second camera 2 b photographs an object into red(r 2 ), green(g 2 ) and blue(b 2 ) color images at an angle different from the first camera 2 a , and sends a video signal corresponding to the green color g 2 and the blue color b 2 to the display unit 14 .
- the display unit 14 displays a color picture using the red(r 1 ), green(g 2 ) and blue(b 2 ) video signals received from the first and second cameras 2 a and 2 b .
- the glasses 6 include a left-eye lens and a right-eye lens.
- the left-eye lens is comprised of a red filter passing only a red color while the right-eye lens is comprised of a cyan filter passing only green and blue colors.
- an observer Since an observer views a red picture photographed by the first camera 2 a via the red filter and green and blue pictures photographed by the second camera 2 b via the cyan filter at the same time by his left and right eyes, respectively, he observes the same object at a different angle by his left and right eyes. Accordingly, the observer recognizes a picture displayed on the display unit 14 as a stereoscopic picture because the left-eye picture is combined with the right-eye picture in his head.
- the glasses 6 may be comprised of a single color filter other than the red filter and a complementary color filter or the single color filter.
- the glasses 6 may consists of a green filter and a magenta filter, or a blue filter and a yellow filter.
- the stereoscopic picture display device shown in FIG. 1 not only causes an observer an inconvenience in that he must wear glasses, but also it has a problem in that it is difficult to display and observe a stereoscopic picture having the original color of an object.
- FIG. 2 and FIG. 3 illustrate a conventional stereoscopic display device that does not require glasses.
- the stereoscopic display device includes a display unit for displaying images from first and second cameras (not shown) alternately in a pixel unit, and a parallax barrier 22 opposed to a display screen of the display unit 24 .
- the display device 24 receives video signals from the first and second cameras photographing an object at a different angle.
- a first pixel P 1 and a second pixel P 2 of the display unit 24 are arranged in such a manner to be alternated with each other.
- a video signal inputted from the first camera is displayed on the first pixel P 1 while a video signal inputted from the second camera is displayed on the second pixel P 2 .
- the first and second pixels P 1 and P 2 display a picture by three initial colors including red, green and blue sub-pixel cells, unlike the display unit 14 of FIG. 1 .
- the parallax barrier 22 is arranged in such a manner to interact with the first and second pixels P 1 and P 2 of the display unit 24 , and includes an opaque filter 22 a and transparent filters 22 L and 22 R that are alternated with each other.
- the opaque filter 22 a and the transparent filters 22 L and 22 R provided at the parallax barrier 22 may be arranged in a stripe shape or in a mosaic shape.
- the first transparent filter 22 L positioned at the left side, transmits light inputted from the first pixel P 1 toward the left-eye EL of an observer.
- the second transparent filter 22 R transmits light inputted from the second pixel P 2 into the right-eye ER of an observer.
- the opaque filter 22 a arranged between the first and second transparent filters 22 L and 22 R shuts off light inputted from the first pixel P 1 and then progressed into the right-eye ER of an observer, and shuts off light inputted from the second pixel P 2 and then progressed into the left-eye EL of an observer.
- the right-eye picture and the left-eye picture are separated by the parallax barrier 22 in this manner, an observer views only a picture at the first pixel P 1 via his left-eye EL, and only a picture at the second pixel P 2 at his right-eye ER. Accordingly, the observer views a picture photographed at different angles at the same time via his left-eye EL and his right-eye ER, so that he recognizes a picture displayed on the display unit 24 as a stereoscopic picture.
- the stereoscopic picture display device shown in FIG. 2 has a deterioration in brightness caused by the opaque filter 22 a . Furthermore, brightness deterioration becomes worse because the number and the density of the opaque filter 22 a are increased for implementation of a wider viewing angle.
- the stereoscopic picture display device employing a color barrier includes first and second cameras 32 a and 32 b for photographing an object at different angles, an image signal converter 36 for converting images inputted from the first and second cameras 32 a and 32 b into a stereoscopic image format to send the same to a display unit 34 , and a color barrier 38 opposed to the display screen of the display unit 34 .
- the image signal converter 36 combines video signals received from the first and second cameras 32 a and 32 b such that the video signals inputted from the first and cameras 32 a and 32 b are arranged alternately, to thereby convert them into a stereoscopic picture format.
- a mixed image signal from the image signal converter 36 is inputted to the display unit 34 .
- Each of the first and second pixels P 1 and P 2 of the display unit 34 includes red, green and blue sub-pixel cells.
- a red video signal r 1 from the first camera 32 a and green and blue video signals g 2 and b 2 from the second camera 34 a are displayed on the first pixel P 1 of the display unit 34 .
- a red video signal r 2 from the second camera 32 b and green and blue video signals g 1 and b 1 from the first camera 32 a are displayed on the second pixel P 2 of the display unit 34 .
- the color barrier 38 includes red filters 38 R 1 and 38 R 2 and a cyan filter, which interact with the first and second pixels P 1 and P 2 and are alternated with each other.
- the first red filter 38 R 1 positioned at the left side of the adjacent red filters 38 R 1 and 38 R 2 transmits a red light r 1 inputted from the first pixel P 1 toward the left-eye of an observer while shutting off light having other wavelength bands.
- the second red filter 38 R 2 positioned at the right side transmits red light r 2 inputted from the second pixel P 2 toward the right-eye of an observer while shutting off light having other wavelength bands.
- the cyan filter 38 C arranged between the first and second red filters 38 R 1 and 38 R 2 shuts off red light, and transmits green and blue lights g 2 and b 2 inputted from the first pixel P 1 toward a right-eye ER of an observer while transmitting green and blue lights g 1 and b 1 toward the left-eye EL of an observer.
- the color barrier 38 may be comprised of a green filter and a magenta filter, or a blue filter or a yellow filter rather than a red filter and a cyan filter.
- Such a conventional stereoscopic picture display device has a problem in that, since all images are displayed by a stereoscopic picture independently of a kind of picture and a user's selection, they have more deterioration in definition than a plane picture upon displaying text information or a stationary picture. Accordingly, there is a need for a stereoscopic picture display device that is capable of selectively displaying a plane picture and a stereoscopic picture depending based upon a user's selection of the kind of picture desired.
- a method of displaying a multi-mode stereoscopic image includes the steps of displaying video signals obtained by photographing an object at different angles on a display unit; generating a mode signal for assigning a stereoscopic mode or a plane mode; separating a picture displayed on the display unit into a left-eye picture and a right-eye picture being incident to the left eye and the right eye of an observer in the stereoscopic mode; and transmitting the picture displayed on the display unit toward the observer “as it is” in the plane mode.
- a multi-mode stereoscopic image displaying apparatus includes an image signal converter for combining video signals obtained by photographing an object at a different angle; a light source for generating light; a display device for taking advantage of light inputted from the light source to display the video signals received from the image signal converter; and a variable color barrier for separating a picture on the display device into a left-eye picture and a right-eye picture in response to first and second voltages set to a different voltage level in a stereoscopic mode while transmitting said picture on the display device (without change) in response to a third voltage other than said first and second voltage in a plane mode, said barrier being opposed to the display device and having adjacent pixels alternated with each other in such a manner to have a complementary color relationship.
- variable color barrier is arranged at the front side of the display device.
- variable color barrier is arranged between the light source and the display device.
- variable color barrier is a liquid crystal display panel adopting any one of an electrically controlled birefringence (ECB) mode and a guest-host (GH) mode.
- EBC electrically controlled birefringence
- GH guest-host
- the multi-mode stereoscopic image display apparatus further includes a mode conversion controller for receiving a user instruction and generating a mode signal for assigning the stereoscopic mode or the plane mode in accordance with the user instruction; a voltage source for generating said first to third voltages; and a switch connected between the variable color barrier and the voltage source to apply said first to third voltages to the variable color barrier in response to the mode signal.
- a mode conversion controller for receiving a user instruction and generating a mode signal for assigning the stereoscopic mode or the plane mode in accordance with the user instruction
- a voltage source for generating said first to third voltages
- a switch connected between the variable color barrier and the voltage source to apply said first to third voltages to the variable color barrier in response to the mode signal.
- a multi-mode stereoscopic image displaying apparatus includes an image signal converter for combining video signals obtained by photographing an object at different angles; a light source for generating light; a display device for taking advantage of light inputted from the light source to display the video signals received from the image signal converter; a color barrier having adjacent pixels alternated with each other in such a manner to have a complementary color relationship; and a light-scattering device, being arranged between the display device, for transmitting an incident light without change, in response to a first voltage in a stereoscopic mode and scattering said incident light in response to a second voltage other than said first voltage in a plane mode.
- the light-scattering device includes a polymer-dispersed liquid crystal (PDLC).
- PDLC polymer-dispersed liquid crystal
- the multi-mode stereoscopic image display apparatus further includes a mode conversion controller for receiving a user instruction and generating a mode signal for assigning the stereoscopic mode or the plane mode in accordance with the user instruction; a voltage source for generating said first and second voltages; and a switch connected between the variable color barrier and the voltage source to apply said first and second voltages to the variable color barrier in response to the mode signal.
- a mode conversion controller for receiving a user instruction and generating a mode signal for assigning the stereoscopic mode or the plane mode in accordance with the user instruction
- a voltage source for generating said first and second voltages
- a switch connected between the variable color barrier and the voltage source to apply said first and second voltages to the variable color barrier in response to the mode signal.
- FIG. 1 is a schematic block diagram showing the configuration of a conventional stereoscopic image display device employing glasses;
- FIG. 2 is a schematic view showing the configuration of a conventional stereoscopic image display device with no glasses
- FIG. 3 is a view for explaining another example of the conventional stereoscopic image display device with no glasses
- FIG. 4 is a graph for explaining a change in a wavelength transmitted in accordance with a voltage applied to a liquid crystal
- FIG. 5 is a graph showing a wavelength to transmittance characteristic according to a voltage of an ECB liquid crystal cell
- FIG. 6 is a schematic block diagram showing the configuration of a multi-mode stereoscopic image display device according to an embodiment of the present invention.
- FIG. 7A and FIG. 7B illustrates another embodiments of the variable color barrier shown in FIG. 6 ;
- FIG. 8A depicts a plane mode operation of the multi-mode stereoscopic picture display device shown in FIG. 6 ;
- FIG. 8B depicts a stereoscopic mode operation of the multi-mode stereoscopic picture display device shown in FIG. 6 ;
- FIG. 9 is a detailed section view of the variable color barrier and the display unit shown in FIG. 6 ;
- FIG. 10 is a schematic block diagram showing the configuration of a multi-mode stereoscopic image display device according to a second embodiment of the present invention.
- FIG. 11A depicts a plane mode operation of the multi-mode stereoscopic picture display device shown in FIG. 10 ;
- FIG. 11B depicts a stereoscopic mode operation of the multi-mode stereoscopic picture display device shown in FIG. 10 ;
- FIG. 12 is a schematic block diagram showing the configuration of a multi-mode stereoscopic image display device according to a third embodiment of the present invention.
- FIG. 13 is a schematic block diagram showing the configuration of a multi-mode stereoscopic image display device according to a fourth embodiment of the present invention.
- FIG. 4 shows a change in a wavelength transmitted from a liquid crystal cell in accordance with a voltage applied to the liquid crystal cell.
- the liquid crystal cell transmits a white light W when it is supplied with a voltage of 2.2V, whereas it shuts off all wavelength bands of light when it is supplied with a voltage of 2.28V, thereby displaying black BK.
- the liquid crystal cell mainly transmits a light G with a green wavelength band when it is supplied with a voltage of 2.32V, whereas it mainly transmits a light R with a green wavelength band when it is supplied with a voltage of 2.35V.
- a liquid crystal mode having a light wavelength modulated in accordance with a supply voltage in this manner includes an electrically controlled birefringence (ECB) mode or a guest-host (GH) mode, etc.
- EBC electrically controlled birefringence
- GH guest-host
- the ECB liquid crystal mode is a mode taking advantage of a complex-refraction characteristic of a liquid crystal, which changes a phase difference in accordance with a voltage application. As a result, the ECB liquid crystal mode changes a transmittance in accordance with a wavelength.
- FIG. 5 shows a transmittance characteristic of the ECB liquid crystal mode depending on a voltage.
- the GH liquid crystal mode means that dichroic dyes are dissolved in a liquid crystal.
- the dichroic dyes are guest molecules of the GH mode, which has a property referred to as “guest-host interaction”, that is, liable to be arranged in accordance with a director of a liquid crystal.
- the dichroic dyes are re-arranged in accordance with a director of a liquid crystal with the aid of an electric field applied to the liquid crystal cell owing to the guest-host interaction.
- the re-arranged dichroic dyes absorb more of a specific wavelength of light in accordance with a polarization direction of a light. Accordingly, the liquid crystal in the GH mode has a property modulating a wavelength of a light depending on an arrangement state of the dichroic dyes.
- the multi-mode stereoscopic picture display strategy according to the embodiment of the present invention takes advantages of a liquid crystal property modulating a wavelength of a light depending on an applied voltage, to thereby display both the plane picture and the stereoscopic picture.
- the multi-mode stereoscopic picture display device includes first and second cameras 52 a and 52 b for photographing an object at a different angle, an image signal converter 56 for converting images inputted from the first and second cameras 52 a and 52 b into a stereoscopic image format to send the same to a display unit 54 , a variable color barrier 58 opposed to the display screen of the display unit 54 , a mode conversion controller 50 connected to the display unit 54 and a user interface (not shown), and first and second switches 60 a and 60 b for applying different voltages V 0 , V 1 and V 2 to the variable color barrier 58 depending on whether there is a plane mode or a stereoscopic mode under control of the mode conversion controller 50 .
- the image signal converter 56 mixes a video signal received from the first camera 52 a with a video signal received from the second camera 52 b , and sends the mixed signal to the display unit 54 .
- the display unit 54 displays the mixed image signal inputted from the image signal converter 56 .
- Each of the first and second pixels P 1 and P 2 of the display unit 54 includes red, green and blue sub-pixel cells.
- a red video signal r 1 from the first camera 52 a and green and blue video signals g 2 and b 2 from the second camera 52 b are displayed on the first pixel P 1 of the display unit 54 .
- a red video signal r 2 from the second camera 52 b and green and blue video signals g 1 and b 1 from the first camera 52 a are displayed on the second pixel P 2 of the display unit 54 .
- the display unit 54 can be implemented with a self-emitting device such as a cathode ray tube (CRT), an electro-luminescence (EL) device or a plasma display panel (PDP).
- a self-emitting device such as a cathode ray tube (CRT), an electro-luminescence (EL) device or a plasma display panel (PDP).
- the display unit 54 may be implemented with a passively emitting device such as a liquid crystal display (LCD) requiring a backlight.
- LCD liquid crystal display
- the variable color barrier 58 includes first variable filters 58 L 1 and 58 R 1 and second variable filters 58 L 2 and 58 R 2 that are alternated with each other.
- the first and second variable filters 58 L 1 , 58 R 1 , 58 L 2 and 58 R 2 are supplied with different voltages depending on a plane mode or a stereoscopic mode. In the plane mode, the first and second variable filters 58 L 1 , 58 R 1 , 58 L 2 and 58 R 2 transmit all wavelength bands of lights inputted from the first and second pixels P 1 and P 2 of the display unit 54 toward an observer.
- the first variable filters 58 L 1 and 58 R 1 transmit only red lights r 1 and r 2 inputted from the first and second pixels P 1 and P 2 toward an observer while shutting off light with other wavelength bands.
- the first variable filters 58 L 1 and 58 R 1 serve as red filters in the stereoscopic mode.
- the second variable filters 58 L 2 and 58 R 2 transmit green light g 1 and g 2 and blue light b 1 and b 2 inputted from the first and second pixels P 1 and P 2 toward an observer in the stereoscopic mode.
- the second variable filters 58 L 2 and 58 R 2 serve as a cyan filter in the stereoscopic mode.
- a distance between the display unit 54 and the variable color barrier 58 and the sizes of variable filters 58 L 1 , 58 R 1 , 58 L 2 and 58 R 2 is appropriately established in consideration of a distance between an observer and the variable color barrier 58 such that a red light r 1 from the first pixel P 1 and a green light g 1 and a blue light b 1 from the second pixel P 2 are incident to the left-eye EL of an observer while a red light r 2 from the second pixel P 2 and a green light g 2 and a blue light b 2 from the first pixel P 1 are incident to the right-eye ER of an observer. Accordingly, an observer recognizes an image photographed by the first camera 52 a through his left-eye EL and an image photographed by the second camera 52 b through his right-eye ER, so that he can view an object in a stereoscopic manner.
- variable color barrier 58 all the filter areas serve as transparent windows in the plane mode while two alternate and adjacent filter areas serve as complementary color filters for transmitting lights having a mutually complementary color relationship in the stereoscopic mode.
- the first and second variable filters 58 L 1 , 58 R 1 , 58 L 2 and 58 R 2 of the variable color barrier 58 consist of variable filters changed into a red filter and a cyan filter, but they may consist of a green filter and a magenta filter, or a blue filter or a yellow filter.
- FIG. 7A is an example wherein the first and second variable filters 58 L 1 , 58 R 1 , 58 L 2 and 58 R 2 consist of a green filter G and a magenta filter M
- FIG. 7B represents a case where the first and second variable filters 58 L 1 , 58 R 1 , 58 L 2 and 58 R 2 consist of a blue filter B and a yellow filter Y.
- FIG. 8A and FIG. 8B A detailed description as to an operation for each mode of the variable color barrier 58 will be made later in conjunction with FIG. 8A and FIG. 8B .
- the mode conversion controller 50 is connected to a user interface such as a remote controller or an on-screen display to control the first and second switches 60 a and 60 b in accordance with a mode conversion command inputted from a user or a picture information inputted from the display unit 54 .
- the first switch 60 a includes a reference contact connected to the first variable color filters 58 L 1 and 58 R 1 of the variable color barrier 58 , and two selection contacts connected to a plane mode voltage source V 0 and a first stereoscopic mode voltage source V 1 .
- the first switch 60 a applies a plane mode voltage V 0 to the first variable color filters 58 L 1 and 58 R 1 of the variable color barrier 58 under control of the mode conversion controller 50 .
- the first switch 60 a applies a first stereoscopic mode voltage V 1 to the first variable color filters 58 L 1 and 58 R 1 of the variable color barrier 58 under control of the mode conversion controller 50 .
- the second switch 60 b includes a reference contact connected to the second variable color filters 58 L 2 and 58 R 2 of the variable color barrier 58 , and two selection contacts connected to a plane mode voltage source V 0 and a second stereoscopic mode voltage source V 2 .
- the second switch 60 b applies a plane mode voltage V 0 to the second variable color filters 58 L 2 and 58 R 2 of the variable color barrier 58 under control of the mode conversion controller 50 in a manner similar to the first switch 60 a .
- the second switch 60 b applies a second stereoscopic mode voltage V 2 to the second variable color filters 58 L 2 and 58 R 2 of the variable color barrier 58 under control of the mode conversion controller 50 .
- a plane mode voltage V 0 is applied to the first and second variable filters 58 L 1 , 58 R 1 , 58 L 2 and 58 R 2 of the variable color barrier 58 . Then, light emitted from the first and second pixels P 1 and P 2 of the display unit 54 is progressed to an observer “as is” without being separated into the left-eye EL and the right-eye ER of an observer. Accordingly, images photographed by the first and second cameras 52 a and 52 b are incident to the left-eye EL and the right-eye ER of an observer in a mixed state in the plane mode, so that an observer recognizes a picture displayed on the display unit 54 as a plane picture.
- a plane mode voltage V 0 can be set to a voltage for allowing the liquid crystal cell to transmit white light as shown in FIG. 4 , i.e., 2.2V.
- the plane mode voltage V 0 may have a different voltage level depending on a type of liquid crystal.
- a first stereoscopic mode voltage V 1 is applied to the first variable filters 58 L 1 and 58 R 1 of the variable color barrier 58 by a switching of the first switch 60 a .
- a second stereoscopic mode voltage V 2 is applied to the second variable filters 58 L 2 and 58 R 2 of the variable color barrier 58 by a switching of the second switch 60 b .
- the first stereoscopic mode voltage V 1 can be set to a voltage for allowing the liquid crystal cell to transmit red light as shown in FIG. 4 , i.e., 2.35V.
- the second stereoscopic mode voltage V 2 can be set to a voltage for allowing the liquid crystal cell to transmit cyan light as shown in FIG. 4 , i.e., a voltage between 2.28V and 2.32V.
- the first and second stereoscopic mode voltages V 1 and V 2 have different voltage levels depending on a type of liquid crystal.
- the first and second variable filters 58 L 1 , 58 R 1 , 58 L 2 and 58 R 2 of the variable color barrier 58 respond to the stereoscopic mode voltages V 1 and V 2 , thereby separating light emitted from the first and second pixels P 1 and P 2 into the left-eye EL and the right-eye ER of an observer such that an image photographed by the first camera 52 a is incident to the left-eye EL of an observer and an image photographed by the second camera 52 b is incident to the right-eye ER of an observer.
- the left filter 58 L 1 of the first variable filters opposite the first pixel P 1 of the display unit 54 transmits a red light r 1 from the first pixel P 1 toward the left-eye EL of an observer while shutting off light having other wavelength bands.
- the right filter 58 R 1 of the first variable filters opposite the second pixel P 2 of the display unit 54 transmits red light r 2 from the second pixel P 2 toward the right-eye ER of an observer while shutting off light having other wavelength bands.
- the left filter 58 L 2 of the second variable filters transmits green right g 1 and blue light b 1 from the second pixel P 2 toward the left-eye EL of an observer while shutting off red light r 1 from the first pixel P 1 .
- the right filter 58 R 2 of the second variable filters transmits green right g 2 and blue light b 2 from the first pixel P 1 toward the right-eye ER of an observer while shutting off red light r 2 from the second pixel P 2 .
- an observer simultaneously views an object at a different angle through his left-eye EL and his right-eye ER in the stereoscopic mode, so that he recognizes a picture displayed on the display unit 54 as a stereoscopic picture.
- the left-eye EL of an observer views an object at an angle of the first camera 52 a while the right-eye ER of an observer views an object at an angle of the second camera 52 b.
- FIG. 9 illustrates detailed structures of the variable color barrier 58 and the display unit 54 .
- variable color barrier 58 and the display unit 54 include liquid crystal display panels 86 and 84 , respectively, having a liquid crystal injected between two glass substrates, each of which are provided with an electrode for applying a voltage signal to the liquid crystal.
- the liquid crystal display panel 86 of the variable color barrier 58 and the liquid crystal display panel 84 of the display unit 54 have polarizers 82 a and 82 b ; 88 a and 88 b are attached to the front side and the rear side thereof, respectively.
- the liquid crystal display panel 86 of the variable color barrier 58 and the liquid crystal display panel 84 of the display unit 54 are spaced by an appropriate distance d from each other so that an observer can separately view left-eye and right-eye picture information.
- the polarizers 82 b and 88 a in which the variable color barrier 58 is opposite to the display unit 54 may be shared by a single polarizer depending upon a design of the polarizer 88 b of the variable color barrier 58 , the liquid crystal display panel 86 , the polarizer 82 a of the display unit 54 and the liquid crystal display panel 84 .
- the multi-mode stereoscopic picture display device includes first and second cameras 92 a and 92 b for photographing an object at different angles, a variable color barrier 98 for modulating a wavelength of a light inputted from a backlight unit 90 in accordance with an applied voltage, a display unit 94 using of light received from the variable color barrier 98 to display a picture, an image signal converter 96 for converting images inputted from the first and second cameras 92 a and 92 b to a display unit 94 , a mode conversion controller 70 connected to the display unit 94 and a user interface (not shown), and first and second switches 720 a and 72 b for applying different voltages V 0 , V 1 and V 2 to the variable color barrier 98 depending on a plane mode or a stereoscopic mode under control of the mode conversion controller 70 .
- the variable color barrier 98 includes first variable filters 98 R and second variable filters 98 C that are alternated with each other.
- the first and second variable filters 98 R and 98 C are supplied with different voltages depending on a plane mode or a stereoscopic mode.
- the first and second variable filters 98 R and 98 C transmit all wavelength bands of lights inputted from the backlight unit 90 toward an observer.
- the first variable filters 98 R transmit only a red wavelength band of light from a white light inputted from the backlight unit 90 toward an observer while shutting off lights other wavelength bands.
- the second variable filters 98 C transmit light with green and blue wavelength bands, that is, a cyan light from a white light inputted from the backlight unit 90 in the stereoscopic mode.
- a distance between the display unit 94 and the variable color barrier 98 is appropriately established in consideration of a distance between an observer and the variable color barrier 58 such that a red light r 1 from the first pixel P 1 and a green light g 1 and a blue light b 1 from the second pixel P 2 are incident to the left-eye EL of an observer while a red light r 2 from the second pixel P 2 and a green light g 2 and a blue light b 2 from the first pixel P 1 are incident to the right-eye ER of an observer. Accordingly, an observer recognizes an image photographed by the first camera 52 a through his left-eye EL and an image photographed by the second camera 52 b through his right-eye ER, so that he can view an object in a stereoscopic manner.
- the first and second variable filters 98 R and 98 C of the variable color barrier 98 may consist of filters having a mutual complementary color relation other than the red filter and the cyan filter, for example, a green filter and a magenta filter, or a blue filter and a yellow filter.
- the image signal converter 96 mixes a video signal received from the first camera 92 a with a video signal received from the second camera 92 b , and sends the mixed signal to the display unit 94 .
- the display unit 94 displays the mixed image signal inputted from the image signal converter 96 .
- Each of the first and second pixels P 1 and P 2 of the display unit 94 includes red, green and blue sub-pixel cells.
- a red video signal r 1 from the first camera 92 a and green and blue video signals g 2 and b 2 from the second camera 92 b are displayed on the first pixel P 1 of the display unit 94 .
- a red video signal r 2 from the second camera 92 b and green and blue video signals g 1 and b 1 from the first camera 92 a are displayed on the second pixel P 2 of the display unit 94 .
- the display unit 94 can be implemented with a transmission-type display device such as a transmission-type liquid crystal display.
- the mode conversion controller 70 is connected to a user interface such as a remote controller or an on-screen display to control the first and second switches 72 a and 72 b in accordance with a mode conversion command inputted from a user or a picture information inputted from the display unit 94 .
- the first switch 72 a includes a reference contact connected to the first variable color filters 98 R of the variable color barrier 98 , and two selection contacts connected to a plane mode voltage source V 0 and a first stereoscopic mode voltage source V 1 .
- the first switch 72 a applies a plane mode voltage V 0 to the first variable color filters 98 R of the variable color barrier 98 under control of the mode conversion controller 70 .
- the first switch 72 a applies a first stereoscopic mode voltage V 1 to the first variable color filters 98 R of the variable color barrier 98 under control of the mode conversion controller 70 .
- the second switch 72 b includes a reference contact connected to the second variable color filters 98 C of the variable color barrier 98 , and two selection contacts connected to a plane mode voltage source V 0 and a second stereoscopic mode voltage source V 2 .
- the second switch 72 b applies a plane mode voltage V 0 to the second variable color filters 98 C of the variable color barrier 98 under control of the mode conversion controller 70 in a manner similar to the first switch 72 a .
- the second switch 72 b applies a second stereoscopic mode voltage V 2 to the second variable color filters 98 C of the variable color barrier 98 under control of the mode conversion controller 70 .
- FIG. 11A represents a plane mode of the multi-mode stereoscopic picture display device according to the second embodiment of the present invention
- FIG. 11B represents a stereoscopic mode of the multi-mode stereoscopic picture display device according to the second embodiment of the present invention.
- the backlight unit 90 when the backlight unit 90 of the multi-mode stereoscopic picture display device is turned on, it generates a white light, irrespective of a plane mode or a stereoscopic mode.
- the backlight unit 90 includes a cold cathode lamp, a reflective mirror for generating a white light in the shape of a linear light source, a light guide for converting a light inputted from the cold cathode lamp and the reflective mirror into the shape of a surface light source, and optical sheets, such as a prism sheet and a diffusion sheet, etc., provided at the light guide to provide uniform light efficiency and light distribution.
- the backlight unit 90 may consist of a plurality of light emitting diodes (LED's) arranged in the shape of a surface emission.
- LED's light emitting diodes
- variable color barrier 98 is supplied with a plane mode voltage V 0 in the plane mode while it is supplied with first and second stereoscopic mode voltages V 1 and V 2 , selectively applied to each adjacent filter thereof in the stereoscopic mode.
- variable color barrier 98 transmits white light from the backlight unit 90 (as it is) toward the display unit as shown in FIG. 11A .
- the variable color barrier 98 responds to each of the first and second stereoscopic mode voltages V 1 and V 2 to thereby convert a white light inputted from the backlight unit 98 into lights having a mutual complementary color relationship, for example, a red light R and a cyan light C via each of adjacent variable filters. These converted lights are incident to the display unit 94 .
- the display unit 94 uses white light inputted via the variable color barrier 98 to display a picture, thereby displaying a plane picture.
- a red video signal r 1 from the first camera 92 a and green and blue video signals g 2 and b 2 from the second camera 92 b are applied to any one of two adjacent pixels of the display unit 94 while a red video signal r 2 from the second camera 92 b and green and blue video signals g 1 and b 1 from the first camera 92 a is applied to the other one, as can be seen from FIG. 10 and FIG. 11B .
- FIG. 12 shows a multi-mode stereoscopic picture display device according to a third embodiment of the present invention.
- elements being substantially identical to those of the multi-mode stereoscopic picture display device shown in FIG. 6 are given by the same reference numerals, and a detailed description of these elements will be omitted.
- the multi-mode stereoscopic picture display device includes a display unit 114 for displaying an image signal, a variable light-scattering device 110 for transmitting or scattering light inputted from the display unit 114 , a color barrier 112 for discriminating a wavelength of a light inputted from the variable light-scattering device 110 , a mode conversion controller 100 and a switch 116 for controlling the variable light-scattering device 110 for each mode.
- the display unit 114 can be implemented with a self-emitting device or a passively emitting device.
- variable light-scattering device 110 changes a scattering characteristic of light inputted from the display unit 114 in accordance with an applied voltage level. It is desirable that the variable light-scattering device 110 consist of a polymer dispersed liquid crystal (PDLC) display device capable of changing a scattering characteristic of a light beam in accordance with an applied voltage.
- PDLC polymer dispersed liquid crystal
- the PDLC includes a solid-state polymer medium and a liquid crystal material isolated in a droplet shape within the medium.
- a director of the liquid crystal droplet has an arrangement changed in accordance with an applied voltage.
- the solid-state polymer is usually selected such that its refractive index is similar to a normal refractive index n 0 of a liquid crystal. In this case, if an electric field the liquid crystal droplet is placed in, then each liquid crystal droplet assumes a random arrangement state, and causes a large refractive index difference between the liquid crystal isolated within the liquid crystal droplet and the polymer medium. Then, a light being incident to the surface of the liquid crystal droplet is scattered.
- each liquid crystal droplet assumes an arrangement state parallel to the electric field to have a refractive index almost similar to the refractive indices of the liquid crystal and the polymer medium. Accordingly, if an electric field is applied to the liquid crystal droplet, then a light incident to the surface of the liquid crystal droplet is transmitted as it is.
- the color barrier 112 includes red filters 112 R 1 and 112 R 2 and a cyan filter 112 C that are alternated with each other.
- the mode conversion controller 100 is connected to a user interface such as a remote controller or an on-screen display to control the switch 116 in accordance with a mode conversion command inputted from a user or picture information inputted from the display unit 114 .
- the switch 116 includes a reference contact connected to the variable light-scattering device 110 , and two selection contacts connected to a plane mode voltage source V 0 and a first stereoscopic mode voltage source V 1 . Under control of the mode conversion controller 100 , the switch 116 applies a plane mode voltage V 0 to the variable light-scattering device 110 in the plane mode while applying a stereoscopic mode voltage V 1 to the variable light-scattering device 110 in the stereoscopic mode.
- a plane mode voltage V 0 is applied to the variable light-scattering device 110 . Then, a light being incident, from the display unit 114 , to the variable light-scattering device 110 is scattered as indicated by a dotted arrow, and thereafter is incident to the color barrier 112 . As a result, a light having passed the color barrier 112 is scattered without being separated into a left-eye picture and a right-eye picture, so that an observer recognizes a picture displayed on the display unit 114 as a plane picture.
- a stereoscopic mode voltage V 1 is applied to the variable light-scattering device 110 .
- a light being incident from the display unit 114 to the variable light-scattering device 110 transmits the variable light-scattering device 110 as indicated by a solid line arrow.
- the first red filter 112 R 1 of the color barrier 112 transmits a red light r 1 inputted from the first pixel P 1 of the display unit 114 toward the left-eye EL of an observer while shutting off lights with other wavelength bands.
- the second red filter 112 R 2 being adjacent to the right side of the first red filter 112 R 1 transmits a red light r 2 inputted from the second pixel P 2 of the display unit 114 toward the right-eye ER of an observer while shutting off light with other wavelength bands.
- the cyan filter 112 C arranged between the first and second red filters 112 R 1 and 112 R 2 of the color barrier 112 shuts off a red light, and transmits green and blue lights g 2 and b 2 inputted from the first pixel P 1 toward the right-eye ER of an observer while transmitting green and blue lights g 1 and b 1 inputted from the second pixel P 2 toward the left-eye EL of an observer.
- an observer simultaneously views an image photographed by the first camera 92 a through his left-eye EL and an image photographed by the second camera 92 b through his right-eye ER, so that he recognizes a picture displayed on the display unit 114 as a stereoscopic picture.
- FIG. 13 shows a multi-mode stereoscopic picture display device according to a fourth embodiment of the present invention.
- elements being substantially identical to those of the multi-mode stereoscopic picture display device shown in FIG. 6 are given by the same reference numerals, and a detailed description as to these elements will be omitted.
- the multi-mode stereoscopic picture display device includes a backlight unit 127 for generating a white light W, a color barrier 123 for receiving the white light W from the backlight unit 127 , a display unit 125 for displaying an image signal, a variable light-scattering device 121 provided between the color barrier 123 and the display unit 125 , and a mode conversion controller 122 and a switch 124 for controlling the variable light-scattering device 121 for each mode.
- the color barrier 123 includes red filters 123 R 1 and 123 R 2 and a cyan filter 123 C that are alternated with each other.
- a white light W from the backlight unit 127 is incident to the color barrier 123 .
- the first red filter 123 R 1 of the color barrier 123 transmits a red light inputted from the backlight unit 127 toward the variable light-scattering device 121 while shutting off lights with other wavelength bands.
- the cyan filter 123 C alternated with the color barrier 123 shuts off only a red light while transmitting green and blue lights inputted from the backlight unit 127 toward the variable light-scattering device 121 .
- variable light-scattering device 121 transmits a light inputted from the color barrier 123 without change in the stereoscopic mode while scattering a light inputted from the color barrier 123 in the plane mode.
- Signals obtained from two cameras 92 a and 92 b having photographed an object at different angles are inputted to two adjacent pixels of the display unit 125 with being mixed by the image signal converter 96 .
- the mode conversion controller 122 controls the switch 124 in accordance with a mode conversion command inputted from a user or picture information inputted from the display unit 125 , or in accordance with a user instruction.
- the switch 124 includes a reference contact connected to the variable light-scattering device 121 , and two selection contacts connected to a plane mode voltage source V 0 and a first stereoscopic mode voltage source V 1 . Under control of the mode conversion controller 122 , the switch 124 applies a plane mode voltage V 0 to the variable light-scattering device 121 in the plane mode while applying a stereoscopic mode voltage V 1 to the variable light-scattering device 121 in the stereoscopic mode.
- a plane mode voltage V 0 is applied to the variable light-scattering device 121 . Then, a light having transmitting the variable light-scattering device 121 is scattered as indicated by a dotted arrow and thereafter is incident to the display unit 125 . As a result, a light having reached the display unit 125 is scattered without being separated into a left-eye picture and a right-eye picture, so that an observer recognizes a picture displayed on the display unit 114 as a plane picture.
- a stereoscopic mode voltage V 1 is applied to the variable light-scattering device 121 . Then, a light having transmitted the variable light-scattering device 121 is progressed as indicated by a solid line arrow to be incident to the display unit 125 .
- an observer simultaneously views an image photographed by the first camera 92 a through his left-eye EL and an image photographed by the second camera 92 b through his right-eye ER, so that he recognizes a picture displayed on the display unit 114 as a stereoscopic picture.
- the multi-mode stereoscopic picture display device can display the plane picture and the stereoscopic picture depending upon a type of picture or a user's selection.
Abstract
Description
δ=2πdΔn/λ (1)
Claims (22)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/055,890 US7085049B2 (en) | 1999-07-19 | 2002-01-28 | Multi-mode stereoscopic image display method and apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KRP1999-29143 | 1999-07-19 | ||
KR1019990029143A KR100359023B1 (en) | 1999-07-19 | 1999-07-19 | Apparatus of 3-Dimension Autosteroscopic Picture Display for Multimode |
US61844700A | 2000-07-18 | 2000-07-18 | |
US10/055,890 US7085049B2 (en) | 1999-07-19 | 2002-01-28 | Multi-mode stereoscopic image display method and apparatus |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US61844700A Continuation-In-Part | 1999-07-19 | 2000-07-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020114072A1 US20020114072A1 (en) | 2002-08-22 |
US7085049B2 true US7085049B2 (en) | 2006-08-01 |
Family
ID=26635860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/055,890 Expired - Lifetime US7085049B2 (en) | 1999-07-19 | 2002-01-28 | Multi-mode stereoscopic image display method and apparatus |
Country Status (1)
Country | Link |
---|---|
US (1) | US7085049B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060139235A1 (en) * | 2004-12-27 | 2006-06-29 | Lg Philips Lcd Co., Ltd. | Driving circuit system for stereoscopic image display device and driving method thereof |
US9723297B2 (en) * | 2015-07-06 | 2017-08-01 | Shenzhen China Star Optoelectronics Technology Co. Ltd. | 3D display device |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2315454B1 (en) * | 2002-09-27 | 2012-07-25 | Sharp Kabushiki Kaisha | 3-D image display device |
KR100728109B1 (en) * | 2004-02-25 | 2007-06-13 | 삼성에스디아이 주식회사 | Stereoscopic display device and driving method thereof |
KR100786862B1 (en) * | 2004-11-30 | 2007-12-20 | 삼성에스디아이 주식회사 | Barrier device, three dimensional image display using the same and method thereof |
KR100719507B1 (en) * | 2005-12-22 | 2007-05-17 | 삼성에스디아이 주식회사 | Driving method of three dimensional display device |
US20110012896A1 (en) * | 2009-06-22 | 2011-01-20 | Ji Maengsob | Image display apparatus, 3d glasses, and method for operating the image display apparatus |
US9030536B2 (en) | 2010-06-04 | 2015-05-12 | At&T Intellectual Property I, Lp | Apparatus and method for presenting media content |
US9049426B2 (en) | 2010-07-07 | 2015-06-02 | At&T Intellectual Property I, Lp | Apparatus and method for distributing three dimensional media content |
US9232274B2 (en) | 2010-07-20 | 2016-01-05 | At&T Intellectual Property I, L.P. | Apparatus for adapting a presentation of media content to a requesting device |
US9032470B2 (en) | 2010-07-20 | 2015-05-12 | At&T Intellectual Property I, Lp | Apparatus for adapting a presentation of media content according to a position of a viewing apparatus |
CN101959076B (en) * | 2010-07-23 | 2012-05-30 | 四川长虹电器股份有限公司 | Automatic debugging method for 3D television color difference |
EP2604042A4 (en) * | 2010-08-12 | 2014-01-01 | 3D Digital Llc | Apparatus, method and article for generating a three dimensional effect using active glasses |
JP5497617B2 (en) * | 2010-11-16 | 2014-05-21 | 住友重機械工業株式会社 | Image generating apparatus and operation support system |
US9445046B2 (en) | 2011-06-24 | 2016-09-13 | At&T Intellectual Property I, L.P. | Apparatus and method for presenting media content with telepresence |
US9602766B2 (en) | 2011-06-24 | 2017-03-21 | At&T Intellectual Property I, L.P. | Apparatus and method for presenting three dimensional objects with telepresence |
US9030522B2 (en) | 2011-06-24 | 2015-05-12 | At&T Intellectual Property I, Lp | Apparatus and method for providing media content |
US8587635B2 (en) | 2011-07-15 | 2013-11-19 | At&T Intellectual Property I, L.P. | Apparatus and method for providing media services with telepresence |
CN107454379A (en) * | 2017-07-27 | 2017-12-08 | 深圳依偎控股有限公司 | A kind of 2D and the method and system of the live conversions of 3D based on image switching |
CN110275309B (en) * | 2019-07-04 | 2021-12-28 | 京东方科技集团股份有限公司 | Polarizing microlens structure, display device and driving method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5315377A (en) | 1991-10-28 | 1994-05-24 | Nippon Hoso Kyokai | Three-dimensional image display using electrically generated parallax barrier stripes |
US5410345A (en) | 1992-09-09 | 1995-04-25 | Dimension Technologies, Inc. | Stroboscopic illumination system for video displays |
US5751479A (en) * | 1994-11-18 | 1998-05-12 | Sanyo Electric Co., Ltd. | Three-dimensional display |
US5825337A (en) * | 1993-11-19 | 1998-10-20 | Asd (Holdings) Ltd | Color autostereoscopic display |
US5945965A (en) | 1995-06-29 | 1999-08-31 | Canon Kabushiki Kaisha | Stereoscopic image display method |
US6252707B1 (en) | 1996-01-22 | 2001-06-26 | 3Ality, Inc. | Systems for three-dimensional viewing and projection |
-
2002
- 2002-01-28 US US10/055,890 patent/US7085049B2/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5315377A (en) | 1991-10-28 | 1994-05-24 | Nippon Hoso Kyokai | Three-dimensional image display using electrically generated parallax barrier stripes |
US5410345A (en) | 1992-09-09 | 1995-04-25 | Dimension Technologies, Inc. | Stroboscopic illumination system for video displays |
US5825337A (en) * | 1993-11-19 | 1998-10-20 | Asd (Holdings) Ltd | Color autostereoscopic display |
US5751479A (en) * | 1994-11-18 | 1998-05-12 | Sanyo Electric Co., Ltd. | Three-dimensional display |
US5945965A (en) | 1995-06-29 | 1999-08-31 | Canon Kabushiki Kaisha | Stereoscopic image display method |
US6252707B1 (en) | 1996-01-22 | 2001-06-26 | 3Ality, Inc. | Systems for three-dimensional viewing and projection |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060139235A1 (en) * | 2004-12-27 | 2006-06-29 | Lg Philips Lcd Co., Ltd. | Driving circuit system for stereoscopic image display device and driving method thereof |
US7489311B2 (en) * | 2004-12-27 | 2009-02-10 | Lg Display Co., Ltd. | Driving circuit system for stereoscopic image display device and driving method thereof |
US9723297B2 (en) * | 2015-07-06 | 2017-08-01 | Shenzhen China Star Optoelectronics Technology Co. Ltd. | 3D display device |
Also Published As
Publication number | Publication date |
---|---|
US20020114072A1 (en) | 2002-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7085049B2 (en) | Multi-mode stereoscopic image display method and apparatus | |
US9087470B2 (en) | 3D image display apparatus and driving method thereof | |
US5822021A (en) | Color shutter liquid crystal display system | |
US6449090B1 (en) | Three dimensional display viewable in both stereoscopic and autostereoscopic modes | |
US5717422A (en) | Variable intensity high contrast passive display | |
KR101632317B1 (en) | 2D/3D switchable image display apparatus | |
CN101806993B (en) | Illumination apparatus and projection display device | |
US6337721B1 (en) | Stereoscopic display | |
US20070013624A1 (en) | Display | |
US5642125A (en) | Two path liquid crystal light valve color display | |
US8724039B2 (en) | Hybrid multiplexed 3D display and displaying method thereof | |
EP3375185B1 (en) | Display device and display control method | |
CN103299358A (en) | Display apparatus | |
CN102279469B (en) | Parallax system, panel, device, display method and computer readable medium | |
CA2905147A1 (en) | Transparent autostereoscopic display | |
US7359013B2 (en) | Display capable of selectively displaying two-dimensional and three-dimensional images | |
KR20150016608A (en) | Autostereoscopic display device and driving method | |
US6184951B1 (en) | Liquid crystal display wherein each pixels of first layer is optically aligned with respective group of pixels of second layer | |
EP1597915B1 (en) | High contrast stereoscopic projection system | |
JPH10239641A (en) | Polarizing spectacles and image display system | |
JP5323355B2 (en) | Large-scale liquid crystal structure | |
JP2003005128A (en) | Display method and display device | |
JPH10153771A (en) | Liquid crystal display device | |
JP4444152B2 (en) | 3D display device | |
JP2016218181A (en) | Projection device using laser beam and head-up display using projection device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LG PHILIPS LCD CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HONG, HYUNG KI;REEL/FRAME:012835/0927 Effective date: 20020419 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: LG DISPLAY CO., LTD., KOREA, REPUBLIC OF Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:020985/0675 Effective date: 20080304 Owner name: LG DISPLAY CO., LTD.,KOREA, REPUBLIC OF Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:020985/0675 Effective date: 20080304 |
|
FEPP | Fee payment procedure |
Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553) Year of fee payment: 12 |